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We also have remote check points in Sydney, Australia and Gloucester, UK. Review service and pricing plan now. Network Diagnostic Tools. Traceroute, nslookup, dig, whois lookup, ping. Port Numbers. Last Updated Expert(s) TCP/UDP: Joe Touch; Eliot Lear, Allison Mankin, Markku Kojo, Kumiko Ono, Martin Stiemerling, Lars Eggert, Alexey Melnikov, Wes Eddy, Alexander Zimmermann, Brian Trammell, and Jana Iyengar SCTP: Allison Mankin and Michael Tuexen DCCP: Eddie Kohler and Yoshifumi Nishida Reference Note Service names and port numbers are used to distinguish between different services that run over transport protocols such as TCP, UDP, DCCP, and SCTP.
Service names are assigned on a first-come, first-served process, as documented in [RFC6335]. Available Formats Plain text. Firewall/Proxy Test. Webmaster Toolkit.